ICD-10-CM > K00-K95 > K35-K38 > K35 > K35.3 > K35.33 K35.33 Acute appendicitis with perforation, localized peritonitis, and gangrene, with abscess Billable/Specific Copy Code Copy Description Applicable To (Acute) appendicitis with (peritoneal) abscess NOSRuptured appendix with localized peritonitis and abscess